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Lenart M, Górecka M, Bochenek M, Barreto-Duran E, Szczepański A, Gałuszka-Bulaga A, Mazur-Panasiuk N, Węglarczyk K, Siwiec-Koźlik A, Korkosz M, Łabaj PP, Baj-Krzyworzeka M, Siedlar M, Pyrc K. SARS-CoV-2 infection impairs NK cell functions via activation of the LLT1-CD161 axis. Front Immunol 2023; 14:1123155. [PMID: 37287972 PMCID: PMC10242091 DOI: 10.3389/fimmu.2023.1123155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Accepted: 04/27/2023] [Indexed: 06/09/2023] Open
Abstract
Introduction Natural killer (NK) cells plays a pivotal role in the control of viral infections, and their function depend on the balance between their activating and inhibitory receptors. The immune dysregulation observed in COVID-19 patients was previously associated with downregulation of NK cell numbers and function, yet the mechanism of inhibition of NK cell functions and the interplay between infected cells and NK cells remain largely unknown. Methods In this study we show that SARS-CoV-2 infection of airway epithelial cells can directly influence NK cell phenotype and functions in the infection microenvironment. NK cells were co-cultured with SARS-CoV-2 infected epithelial cells, in a direct contact with A549ACE2/TMPRSS2 cell line or in a microenvironment of the infection in a 3D ex vivo human airway epithelium (HAE) model and NK cell surface expression of a set of most important receptors (CD16, NKG2D, NKp46, DNAM-1, NKG2C, CD161, NKG2A, TIM-3, TIGIT, and PD-1) was analyzed. Results We observed a selective, in both utilized experimental models, significant downregulation the proportion of CD161 (NKR-P1A or KLRB1) expressing NK cells, and its expression level, which was followed by a significant impairment of NK cells cytotoxicity level against K562 cells. What is more, we confirmed that SARS-CoV-2 infection upregulates the expression of the ligand for CD161 receptor, lectin-like transcript 1 (LLT1, CLEC2D or OCIL), on infected epithelial cells. LLT1 protein can be also detected not only in supernatants of SARS-CoV-2 infected A549ACE2/TMPRSS2 cells and HAE basolateral medium, but also in serum of COVID-19 patients. Finally, we proved that soluble LLT1 protein treatment of NK cells significantly reduces i) the proportion of CD161+ NK cells, ii) the ability of NK cells to control SARS-CoV-2 infection in A549ACE2/TMPRSS2 cells and iii) the production of granzyme B by NK cells and their cytotoxicity capacity, yet not degranulation level. Conclusion We propose a novel mechanism of SARS-CoV-2 inhibition of NK cell functions via activation of the LLT1-CD161 axis.
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Affiliation(s)
- Marzena Lenart
- Virogenetics Laboratory of Virology, Malopolska Centre of Biotechnology, Jagiellonian University, Krakow, Poland
| | - Magdalena Górecka
- Virogenetics Laboratory of Virology, Malopolska Centre of Biotechnology, Jagiellonian University, Krakow, Poland
| | - Michal Bochenek
- Flow Cytometry Core Facility, Malopolska Centre of Biotechnology, Jagiellonian University, Krakow, Poland
| | - Emilia Barreto-Duran
- Virogenetics Laboratory of Virology, Malopolska Centre of Biotechnology, Jagiellonian University, Krakow, Poland
| | - Artur Szczepański
- Virogenetics Laboratory of Virology, Malopolska Centre of Biotechnology, Jagiellonian University, Krakow, Poland
| | - Adrianna Gałuszka-Bulaga
- Department of Clinical Immunology, Institute of Pediatrics, Jagiellonian University Medical College, Krakow, Poland
| | - Natalia Mazur-Panasiuk
- Virogenetics Laboratory of Virology, Malopolska Centre of Biotechnology, Jagiellonian University, Krakow, Poland
| | - Kazimierz Węglarczyk
- Department of Clinical Immunology, Institute of Pediatrics, Jagiellonian University Medical College, Krakow, Poland
| | - Andżelika Siwiec-Koźlik
- Department of Rheumatology and Immunology, Jagiellonian University Medical College, Krakow, Poland
- 2nd Department of Internal Medicine, University Hospital, Krakow, Poland
| | - Mariusz Korkosz
- Department of Rheumatology and Immunology, Jagiellonian University Medical College, Krakow, Poland
| | - Paweł P. Łabaj
- Bioinformatics Research Group, Malopolska Centre of Biotechnology, Jagiellonian University, Krakow, Poland
| | - Monika Baj-Krzyworzeka
- Department of Clinical Immunology, Institute of Pediatrics, Jagiellonian University Medical College, Krakow, Poland
| | - Maciej Siedlar
- Department of Clinical Immunology, Institute of Pediatrics, Jagiellonian University Medical College, Krakow, Poland
| | - Krzysztof Pyrc
- Virogenetics Laboratory of Virology, Malopolska Centre of Biotechnology, Jagiellonian University, Krakow, Poland
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Lichocka M, Krzymowska M, Górecka M, Hennig J. Arabidopsis annexin 5 is involved in maintenance of pollen membrane integrity and permeability. J Exp Bot 2022; 73:94-109. [PMID: 34522949 DOI: 10.1093/jxb/erab419] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Accepted: 09/16/2021] [Indexed: 06/13/2023]
Abstract
In Arabidopsis, a dry stigma surface enables a gradual hydration of pollen grains by a controlled release of water. Occasionally the grains may be exposed to extreme precipitations that cause rapid water influx and swelling, eventually leading to pollen membrane rupture. In metazoans, calcium- and phospholipid-binding proteins, referred to as annexins, participate in the repair of plasma membrane damages. It remains unclear, however, how this process is conducted in plants. Here, we examined whether plant annexin 5 (ANN5), the most abundant member of the annexin family in pollen, is involved in the restoration of pollen membrane integrity. We analyzed the cellular dynamics of ANN5 in pollen grains undergoing hydration in favorable or stress conditions. We observed a transient association of ANN5 with the pollen membrane during in vitro hydration that did not occur in the pollen grains being hydrated on the stigma. To simulate a rainfall, we performed spraying of the pollinated stigma with deionized water that induced ANN5 accumulation at the pollen membrane. Interestingly, calcium or magnesium application affected pollen membrane properties differently, causing rupture or shrinkage of pollen membrane, respectively. Both treatments, however, induced ANN5 recruitment to the pollen membrane. Our data suggest a model in which ANN5 is involved in the maintenance of membrane integrity in pollen grains exposed to osmotic or ionic imbalances.
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Affiliation(s)
- Małgorzata Lichocka
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Pawinskiego 5a, 02-106 Warsaw, Poland
| | - Magdalena Krzymowska
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Pawinskiego 5a, 02-106 Warsaw, Poland
| | - Magdalena Górecka
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Pawinskiego 5a, 02-106 Warsaw, Poland
| | - Jacek Hennig
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Pawinskiego 5a, 02-106 Warsaw, Poland
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Gawroński P, Burdiak P, Scharff LB, Mielecki J, Górecka M, Zaborowska M, Leister D, Waszczak C, Karpiński S. CIA2 and CIA2-LIKE are required for optimal photosynthesis and stress responses in Arabidopsis thaliana. Plant J 2021; 105:619-638. [PMID: 33119927 DOI: 10.1111/tpj.15058] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Revised: 10/05/2020] [Accepted: 10/12/2020] [Indexed: 05/22/2023]
Abstract
Chloroplast-to-nucleus retrograde signaling is essential for cell function, acclimation to fluctuating environmental conditions, plant growth and development. The vast majority of chloroplast proteins are nuclear-encoded, and must be imported into the organelle after synthesis in the cytoplasm. This import is essential for the development of fully functional chloroplasts. On the other hand, functional chloroplasts act as sensors of environmental changes and can trigger acclimatory responses that influence nuclear gene expression. Signaling via mobile transcription factors (TFs) has been recently recognized as a way of communication between organelles and the nucleus. In this study, we performed a targeted reverse genetic screen to identify dual-localized TFs involved in chloroplast retrograde signaling during stress responses. We found that CHLOROPLAST IMPORT APPARATUS 2 (CIA2) has a functional plastid transit peptide, and can be located both in chloroplasts and the nucleus. Further, we found that CIA2, along with its homolog CIA2-like (CIL) are involved in the regulation of Arabidopsis responses to UV-AB, high light and heat shock. Finally, our results suggest that both CIA2 and CIL are crucial for chloroplast translation. Our results contribute to a deeper understanding of signaling events in the chloroplast-nucleus cross-talk.
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Affiliation(s)
- Piotr Gawroński
- Department of Plant Genetics, Breeding, and Biotechnology, Warsaw University of Life Sciences, Warsaw, 02-776, Poland
| | - Paweł Burdiak
- Department of Plant Genetics, Breeding, and Biotechnology, Warsaw University of Life Sciences, Warsaw, 02-776, Poland
| | - Lars B Scharff
- Copenhagen Plant Science Center, Department of Plant and Environmental Sciences, University of Copenhagen, Frederiksberg C, 1871, Denmark
| | - Jakub Mielecki
- Department of Plant Genetics, Breeding, and Biotechnology, Warsaw University of Life Sciences, Warsaw, 02-776, Poland
| | - Magdalena Górecka
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Pawińskiego 5a, Warsaw, 02-106, Poland
| | - Magdalena Zaborowska
- Department of Plant Genetics, Breeding, and Biotechnology, Warsaw University of Life Sciences, Warsaw, 02-776, Poland
| | - Dario Leister
- Plant Molecular Biology, Faculty of Biology, Ludwig-Maximilians-University Munich, Großhadernerstraße 2-4, Planegg-Martinsried, 82152, Germany
| | - Cezary Waszczak
- Organismal and Evolutionary Biology Research Programme, Faculty of Biological and Environmental Sciences, and Viikki Plant Science Centre, University of Helsinki, Helsinki, 00014, Finland
| | - Stanisław Karpiński
- Department of Plant Genetics, Breeding, and Biotechnology, Warsaw University of Life Sciences, Warsaw, 02-776, Poland
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Bartosik-Psujek H, Kaczyński Ł, Górecka M, Rolka M, Wójcik R, Zięba P, Kaczor M. Cladribine tablets versus other disease-modifying oral drugs in achieving no evidence of disease activity (NEDA) in multiple sclerosis-A systematic review and network meta-analysis. Mult Scler Relat Disord 2021; 49:102769. [PMID: 33516133 DOI: 10.1016/j.msard.2021.102769] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2020] [Revised: 12/04/2020] [Accepted: 01/13/2021] [Indexed: 12/01/2022]
Abstract
INTRODUCTION Assuming full control of the relapsing-remitting multiple sclerosis (RRMS) is the main target for practitioners. Disease control could be defined as no clinical relapse, absence of 3-month confirmed disability progression expressed on the Expanded Disability Status Scale (EDSS), as well as no disease activity on magnetic resonance imaging (MRI). NEDA-3 (no evidence of disease activity) is a composite endpoint used primarily in clinical trials, comprising these 3 measurements of disease activity. The aim of this study is to compare cladribine tablets (CT) with oral disease-modifying drugs (DMDs) - fingolimod (FTY), dimethyl fumarate (DMF), and teriflunomide (TERI) - with regard to NEDA-3 and its clinical (relapse and disability progression) and MRI (no new T1 Gd+ lesions or no new T2 lesions or no enlargement of existing lesions) components occurrence during a 24-month follow-up. METHODS In June 2018, a systematic review of MEDLINE, Embase and Cochrane database was performed. Due to the lack of head-to-head trials directly comparing cladribine tablets to oral drugs of interest, an indirect network meta-analysis (NMA) was applied, with placebo as a common comparator. NMA was performed with Bayesian approach and Markov chain Monte Carlo (MCMC) method for estimating posterior distributions. Additional data used in the analysis were taken from conference abstracts or post hoc analyses of pooled data from the clinical studies. RESULTS Six randomised clinical trials (RCTs) presenting NEDA, with active treatment compared to placebo, were included in the NMA: CLARITY (CT), FREEDOMS and FREEDOMS II (FTY), CONFIRM and DEFINE (DMF) and TEMSO (TERI). The rate of NEDA-3 was significantly higher in cladribine tablets vs DMF: OR (odds ratio)=1.76 (95% CrI [credible intervals]: 1.02-3.03) and TERI: OR=2.78 (95% CrI: 1.60-4.83), but not vs FTY. For the MRI NEDA results were as follows - cladribine tablets vs DMF: OR=1.87 (95% CrI: 1.18-2.97); cladribine tablets vs TERI: OR=6.59 (95% CrI: 4.32-10.09); cladribine tablets vs FTY: OR=1.58 (95% CrI: 1.10-2.29). The comparison of clinical NEDA did not reach significance vs either DMF or TERI and evaluation vs FTY was not possible because of lack of data. CONCLUSIONS Cladribine in the form of tablets was significantly more effective in achieving NEDA-3 than DMF and TERI, but there was no significant difference vs FTY. Cladribine tablets was more effective than all oral comparators considering the MRI NEDA. For clinical NEDA, the superiority vs DMF and vs TERI was not confirmed, and vs FTY evaluation was not possible.
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Affiliation(s)
- Halina Bartosik-Psujek
- Department of Neurology, Institute of Medical Sciences, Medical College of Rzeszow University, Warzywna 1A, 35-310 Rzeszów, Poland.
| | | | | | | | - Rafał Wójcik
- Aestimo s.c., Krakowska 36/3, 31-062 Kraków, Poland
| | - Patrycja Zięba
- Merck Sp. z o.o., Aleje Jerozolimskie 142 B, 02-305 Warsaw, Poland, an affiliate of Merck KGaA, Darmstadt, Germany
| | - Marcin Kaczor
- Jagiellonian University Medical College, Skawinska 8, 31-066 Kraków, Poland
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Bochenek-Cibor J, Górecka M, Storman D, Bała MM. Support for Metastatic Breast Cancer Patients-a Systematic Review. J Cancer Educ 2020; 35:1061-1067. [PMID: 32524382 PMCID: PMC7679297 DOI: 10.1007/s13187-020-01783-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Our study objective was to evaluate existing evidence on different types of support received by metastatic breast cancer patients as well as the need for support expressed by such patients. We searched Medline and EMBASE up to January 2019 for survey studies that aimed to assess any type of support among women of any age, with metastatic breast cancer diagnosis. Two reviewers independently screened titles and abstracts, then full texts of retrieved records against inclusion/exclusion criteria, and extracted the data and assessed the quality of included studies with AXIS tool. From a total of 2876 abstracts, we selected 100 potentially eligible full-text articles, and finally, we included 12 records reporting on 11 studies. Due to the variability of methods used to measure and define support, it was not possible to quantitatively synthesize data; therefore, we synthesized them narratively. The quality of the included studies was moderate. We found that most patients are satisfied with the received psychosocial, emotional, informational, and medical support. In the analysis of any support received from a certain type of group of people, we found that the majority of patients reported receiving sufficient support from their family, friends, and healthcare providers. Ten studies showed a high need for informational support. If asked about the need for psychosocial, medical, and sexual support, women also declared the need for such support. Our review revealed that the patients generally receive support from their community but they express high need for information and treatment choice. PROSPERO CRD42019127496.
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Affiliation(s)
| | - Magdalena Górecka
- Students' Scientific Group of Systematic Reviews, Systematic Reviews Unit, Jagiellonian University Medical College, Kraków, Poland
| | - Dawid Storman
- Chair of Epidemiology and Preventive Medicine, Department of Hygiene and Dietetics, Faculty of Medicine, Jagiellonian University Medical College, Kraków, Poland
- Systematic Reviews Unit, Jagiellonian University Medical College, Krakow, Poland
| | - Małgorzata M Bała
- Chair of Epidemiology and Preventive Medicine, Department of Hygiene and Dietetics, Faculty of Medicine, Jagiellonian University Medical College, Kraków, Poland.
- Systematic Reviews Unit, Jagiellonian University Medical College, Krakow, Poland.
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Górecka M, Lewandowska M, Dąbrowska-Bronk J, Białasek M, Barczak-Brzyżek A, Kulasek M, Mielecki J, Kozłowska-Makulska A, Gawroński P, Karpiński S. Photosystem II 22kDa protein level - a prerequisite for excess light-inducible memory, cross-tolerance to UV-C and regulation of electrical signalling. Plant Cell Environ 2020; 43:649-661. [PMID: 31760664 DOI: 10.1111/pce.13686] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Revised: 11/15/2019] [Accepted: 11/16/2019] [Indexed: 05/20/2023]
Abstract
It is well known that PsbS is a key protein for the proper management of excessive energy in plants. Plants without PsbS cannot trigger non-photochemical quenching, which is crucial for optimal photosynthesis under variable conditions. Our studies showed wild-type plants had enhanced tolerance to UV-C-induced cell death (CD) upon induction of light memory by a blue or red light. However, npq4-1 plants, which lack PsbS, as well as plants overexpressing this protein (oePsbS), responded differently. Untreated oePsbS appeared more tolerant to UV-C exposure, whereas npq4-1 was unable to adequately induce cross-tolerance to UV-C. Similarly, light memory induced by episodic blue or red light was differently deregulated in npq-4 and oePsbS, as indicated by transcriptomic analyses, measurements of the trans-thylakoid pH gradient, chlorophyll a fluorescence parameters, and measurements of foliar surface electrical potential. The mechanism of the foliar CD development seemed to be unaffected in the analysed plants and is associated with chloroplast breakdown. Our results suggest a novel, substantial role for PsbS as a regulator of chloroplast retrograde signalling for light memory, light acclimation, CD, and cross-tolerance to UV radiation.
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Affiliation(s)
- Magdalena Górecka
- Department of Plant Genetics, Breeding and Biotechnology, Institute of Biology, Warsaw University of Life Sciences, Warsaw, Poland
- Laboratory of Plant Pathogenesis, Institute of Biochemistry and Biophysics PAS, Warsaw, Poland
| | - Maria Lewandowska
- Department of Plant Genetics, Breeding and Biotechnology, Institute of Biology, Warsaw University of Life Sciences, Warsaw, Poland
| | - Joanna Dąbrowska-Bronk
- Department of Plant Physiology, Institute of Biology, Warsaw University of Life Sciences, Warsaw, Poland
| | - Maciej Białasek
- Department of Plant Genetics, Breeding and Biotechnology, Institute of Biology, Warsaw University of Life Sciences, Warsaw, Poland
- Department of Physiological Sciences, Faculty of Veterinary Medicine, Warsaw University of Life Sciences, Warsaw, Poland
| | - Anna Barczak-Brzyżek
- Department of Plant Genetics, Breeding and Biotechnology, Institute of Biology, Warsaw University of Life Sciences, Warsaw, Poland
| | - Milena Kulasek
- Department of Plant Genetics, Breeding and Biotechnology, Institute of Biology, Warsaw University of Life Sciences, Warsaw, Poland
- Faculty of Biological and Veterinary Sciences, Nicolaus Copernicus University in Toruń, Poland
| | - Jakub Mielecki
- Department of Plant Genetics, Breeding and Biotechnology, Institute of Biology, Warsaw University of Life Sciences, Warsaw, Poland
| | - Anna Kozłowska-Makulska
- Department of Plant Genetics, Breeding and Biotechnology, Institute of Biology, Warsaw University of Life Sciences, Warsaw, Poland
| | - Piotr Gawroński
- Department of Plant Genetics, Breeding and Biotechnology, Institute of Biology, Warsaw University of Life Sciences, Warsaw, Poland
| | - Stanisław Karpiński
- Department of Plant Genetics, Breeding and Biotechnology, Institute of Biology, Warsaw University of Life Sciences, Warsaw, Poland
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Gojowy D, Karkoszka H, Kubis P, Górecka M, Więcek A, Adamczak M. SP137CHRONIC KIDNEY DISEASE IN PATIENTS AFTER LIVER TRANSPLANTATION. Nephrol Dial Transplant 2019. [DOI: 10.1093/ndt/gfz103.sp137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Damian Gojowy
- Department of Nephrology, Transplantation and Internal Medicine, Katowice, Poland
| | - Henryk Karkoszka
- Medical University of Silesia, Katowice, Poland, Katowice, Poland
| | - Piotr Kubis
- Medical University of Silesia, Katowice, Poland, Katowice, Poland
| | | | - Andrzej Więcek
- Medical University of Silesia, Katowice, Poland, Katowice, Poland
| | - Marcin Adamczak
- Medical University of Silesia, Katowice, Poland, Katowice, Poland
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Radoń-Pokracka M, Piasecki M, Lachowska A, Baczkowski S, Spaczyńska J, Górecka M, Nowak M, Huras H. Assessment of the implementation of the infectious diseases screening programmes among pregnant women in the Lesser Poland region and comparison with similar programmes conducted in other European Union countries. Ginekol Pol 2018; 88:151-155. [PMID: 28397205 DOI: 10.5603/gp.a2017.0029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2016] [Revised: 01/30/2017] [Accepted: 02/02/2017] [Indexed: 11/25/2022] Open
Abstract
OBJECTIVES The aim of the study was to assess the level of implementation of recommendations of the Ministry of Health regarding infectious disease screening during pregnancy. MATERIAL AND METHODS The study included 477 patients who were admitted to the delivery room between December 2015 and February 2016. Data on screening test results were collected based on medical records covering the period before the admission. RESULTS The Human Immunodeficiency Virus (HIV) screening was conducted in 410 (86%). 460 (96%) of patients were screened for Hepatitis B Virus (HBV) and 427 (89.5%) for Hepatitis C Virus (HCV). Syphilis screening covered 465 (97.5%) of patients. Immunoglobulin M (IgM) titer against Rubella Virus (RV) was assessed in 218 (45%) patients and immunoglobulin G (IgG) in 319 (66.9%). Screening for Toxoplasma gondii based on assessment of IgM titer was conducted in 440 (92%) patients while IgG titter was assessed in 413 (86.6%). 343 (71.9%) patients had obtained vaginal swabs for Group B Streptococci (GBS) while the anal swabs were taken only from 268 (56.2%) patients. CONCLUSIONS Coverage of screening for syphilis and HBV was similar to the countries with highest prevalence of conducting such screening, on the other hand RV screening place as among countries with lowest prevalence. There is an increasing trend in conducting HIV screening. Screening for HCV and toxoplasmosis is at satisfactory level and Poland is one of a few European countries offering such screening. The screening for GBS is insufficient which result in excessive use of intrapartum antibiotic prophylaxis.
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Barczak-Brzyżek A, Kiełkiewicz M, Górecka M, Kot K, Karpińska B, Filipecki M. Abscisic Acid Insensitive 4 transcription factor is an important player in the response of Arabidopsis thaliana to two-spotted spider mite (Tetranychus urticae) feeding. Exp Appl Acarol 2017; 73:317-326. [PMID: 29210003 PMCID: PMC5727149 DOI: 10.1007/s10493-017-0203-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2017] [Accepted: 11/24/2017] [Indexed: 05/04/2023]
Abstract
Plants growing in constantly changeable environmental conditions are compelled to evolve regulatory mechanisms to cope with biotic and abiotic stresses. Effective defence to invaders is largely connected with phytohormone regulation, resulting in the production of numerous defensive proteins and specialized metabolites. In our work, we elucidated the role of the Abscisic Acid Insensitive 4 (ABI4) transcription factor in the plant response to the two-spotted spider mite (TSSM). This polyphagous mite is one of the most destructive herbivores, which sucks mesophyll cells of numerous crop and wild plants. Compared to the wild-type (Col-0) Arabidopsis thaliana plants, the abi4 mutant demonstrated increased susceptibility to TSSM, reflected as enhanced female fecundity and greater frequency of mite leaf damage after trypan blue staining. Because ABI4 is regarded as an important player in the plastid-to-nucleus retrograde signalling process, we investigated the plastid envelope membrane dynamics using stroma-associated fluorescent marker. Our results indicated a clear increase in the number of stroma-filled tubular structures deriving from the plastid membrane (stromules) in the close proximity of the site of mite leaf damage, highlighting the importance of chloroplast-derived signals in the response to TSSM feeding activity.
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Affiliation(s)
| | | | | | - Karol Kot
- Warsaw University of Life Sciences - SGGW, Warsaw, Poland
| | - Barbara Karpińska
- Warsaw University of Life Sciences - SGGW, Warsaw, Poland
- Centre for Plant Sciences, School of Biology, Faculty of Biological Sciences, University of Leeds, Leeds, UK
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Białasek M, Górecka M, Mittler R, Karpiński S. Evidence for the Involvement of Electrical, Calcium and ROS Signaling in the Systemic Regulation of Non-Photochemical Quenching and Photosynthesis. Plant Cell Physiol 2017; 58:207-215. [PMID: 28184891 PMCID: PMC5444583 DOI: 10.1093/pcp/pcw232] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2016] [Accepted: 12/24/2016] [Indexed: 05/19/2023]
Abstract
In contrast to the function of reactive oxygen species, calcium, hormones and small RNAs in systemic signaling, systemic electrical signaling in plants is poorly studied and understood. Pulse amplitude-modulated Chl fluorescence imaging and surface electrical potential measurements accompanied by pharmacological treatments were employed to study stimuli-induced electrical signals in leaves from a broad range of plant species and in Arabidopsis thaliana mutants. Here we report that rapid electrical signals in response to a local heat stimulus regulate systemic changes in non-photochemical quenching (NPQ) and PSII quantum efficiency. Both stimuli-induced systemic changes in NPQ and photosynthetic capacity as well as electrical signaling depended on calcium channel activity. Use of an Arabidopsis respiratory burst oxidase homolog D (RBOHD) mutant (rbohD) as well as an RBOH inhibitor further suggested a cross-talk between ROS and electrical signaling. Our results suggest that higher plants evolved a complex rapid long-distance calcium-dependent electrical systemic signaling in response to local stimuli that regulates and optimizes the balance between PSII quantum efficiency and excess energy dissipation in the form of heat by means of NPQ.
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Affiliation(s)
- Maciej Białasek
- Department of Plant Genetics, Breeding and Biotechnology, Faculty of Horticulture, Biotechnology and Landscape Architecture, Warsaw University of Life Sciences SGGW, Nowoursynowska 159, 02-776 Warsaw
| | - Magdalena Górecka
- Department of Plant Genetics, Breeding and Biotechnology, Faculty of Horticulture, Biotechnology and Landscape Architecture, Warsaw University of Life Sciences SGGW, Nowoursynowska 159, 02-776 Warsaw
| | - Ron Mittler
- Department of Biological Sciences, College of Arts and Sciences, University of North Texas, Denton, TX 76203-5017, USA
| | - Stanisław Karpiński
- Department of Plant Genetics, Breeding and Biotechnology, Faculty of Horticulture, Biotechnology and Landscape Architecture, Warsaw University of Life Sciences SGGW, Nowoursynowska 159, 02-776 Warsaw
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Lewandowska M, Górecka M, Bialasek M, Sujkowska-Rybkowska M, Dworakowska B, Karpinski S. Incorporation of inorganic nanostructures into the internal structures of Arabidopsis thaliana. N Biotechnol 2016. [DOI: 10.1016/j.nbt.2016.06.1018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Gilroy S, Białasek M, Suzuki N, Górecka M, Devireddy AR, Karpiński S, Mittler R. ROS, Calcium, and Electric Signals: Key Mediators of Rapid Systemic Signaling in Plants. Plant Physiol 2016; 171:1606-15. [PMID: 27208294 PMCID: PMC4936577 DOI: 10.1104/pp.16.00434] [Citation(s) in RCA: 291] [Impact Index Per Article: 36.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2016] [Accepted: 05/10/2016] [Indexed: 05/19/2023]
Abstract
ROS, calcium, and electric signals mediate rapid systemic signaling in plants.
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Affiliation(s)
- Simon Gilroy
- Department of Botany, University of Wisconsin, Madison, Wisconsin 53706 (S.G.);Department of Plant Genetics, Breeding, and Biotechnology, Faculty of Horticulture, Biotechnology, and Landscape Architecture, Warsaw University of Life Sciences, 02-776 Warsaw, Poland (M.B., M.G., S.K.);Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, Chiyoda-ku, 102-8554 Tokyo, Japan (N.S.); andDepartment of Biological Sciences, College of Arts and Sciences, University of North Texas, Denton, Texas 76203 (A.R.D., R.M.)
| | - Maciej Białasek
- Department of Botany, University of Wisconsin, Madison, Wisconsin 53706 (S.G.);Department of Plant Genetics, Breeding, and Biotechnology, Faculty of Horticulture, Biotechnology, and Landscape Architecture, Warsaw University of Life Sciences, 02-776 Warsaw, Poland (M.B., M.G., S.K.);Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, Chiyoda-ku, 102-8554 Tokyo, Japan (N.S.); andDepartment of Biological Sciences, College of Arts and Sciences, University of North Texas, Denton, Texas 76203 (A.R.D., R.M.)
| | - Nobuhiro Suzuki
- Department of Botany, University of Wisconsin, Madison, Wisconsin 53706 (S.G.);Department of Plant Genetics, Breeding, and Biotechnology, Faculty of Horticulture, Biotechnology, and Landscape Architecture, Warsaw University of Life Sciences, 02-776 Warsaw, Poland (M.B., M.G., S.K.);Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, Chiyoda-ku, 102-8554 Tokyo, Japan (N.S.); andDepartment of Biological Sciences, College of Arts and Sciences, University of North Texas, Denton, Texas 76203 (A.R.D., R.M.)
| | - Magdalena Górecka
- Department of Botany, University of Wisconsin, Madison, Wisconsin 53706 (S.G.);Department of Plant Genetics, Breeding, and Biotechnology, Faculty of Horticulture, Biotechnology, and Landscape Architecture, Warsaw University of Life Sciences, 02-776 Warsaw, Poland (M.B., M.G., S.K.);Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, Chiyoda-ku, 102-8554 Tokyo, Japan (N.S.); andDepartment of Biological Sciences, College of Arts and Sciences, University of North Texas, Denton, Texas 76203 (A.R.D., R.M.)
| | - Amith R Devireddy
- Department of Botany, University of Wisconsin, Madison, Wisconsin 53706 (S.G.);Department of Plant Genetics, Breeding, and Biotechnology, Faculty of Horticulture, Biotechnology, and Landscape Architecture, Warsaw University of Life Sciences, 02-776 Warsaw, Poland (M.B., M.G., S.K.);Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, Chiyoda-ku, 102-8554 Tokyo, Japan (N.S.); andDepartment of Biological Sciences, College of Arts and Sciences, University of North Texas, Denton, Texas 76203 (A.R.D., R.M.)
| | - Stanisław Karpiński
- Department of Botany, University of Wisconsin, Madison, Wisconsin 53706 (S.G.);Department of Plant Genetics, Breeding, and Biotechnology, Faculty of Horticulture, Biotechnology, and Landscape Architecture, Warsaw University of Life Sciences, 02-776 Warsaw, Poland (M.B., M.G., S.K.);Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, Chiyoda-ku, 102-8554 Tokyo, Japan (N.S.); andDepartment of Biological Sciences, College of Arts and Sciences, University of North Texas, Denton, Texas 76203 (A.R.D., R.M.)
| | - Ron Mittler
- Department of Botany, University of Wisconsin, Madison, Wisconsin 53706 (S.G.);Department of Plant Genetics, Breeding, and Biotechnology, Faculty of Horticulture, Biotechnology, and Landscape Architecture, Warsaw University of Life Sciences, 02-776 Warsaw, Poland (M.B., M.G., S.K.);Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, Chiyoda-ku, 102-8554 Tokyo, Japan (N.S.); andDepartment of Biological Sciences, College of Arts and Sciences, University of North Texas, Denton, Texas 76203 (A.R.D., R.M.)
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Górecka M, Synak M, Brzezińska Z, Dąbrowski J, Żernicka E. Effect of triiodothyronine (T3) excess on fatty acid metabolism in the soleus muscle from endurance-trained rats. Biochem Cell Biol 2016; 94:101-8. [DOI: 10.1139/bcb-2015-0051] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
We studied whether short-term administration of triiodothyronine (T3) for the last 3 days of endurance training would influence the rate of uptake of palmitic acid (PA) as well as metabolism in rat soleus muscle, in vitro. Training per se did not affect the rate of PA uptake by the soleus; however, an excess of T3increased the rate of this process at 1.5 mmol/L PA, as well as the rate that at which PA was incorporated into intramuscular triacylglycerols (TG). The rate of TG synthesis in trained euthyroid rats was reduced after exercise (1.5 mmol/L PA). The rate of PA oxidation in all of the trained rats immediately after exercise was enhanced by comparison with the sedentary values. Hyperthyroidism additionally increased the rate of this process at 1.5 mmol/L PA. After a recovery period, the rate of PA oxidation returned to the control values in both the euthyroid and the hyperthyroid groups. Examination of the high-energy phosphate levels indicated that elevated PA oxidation after exercise-training in euthyroid rats was associated with stable ATP levels and increased ADP and AMP levels, thus reducing energy cellular potential (ECP). In the hyperthyroid rats, levels of ADP and AMP were increased in the sedentary as well as the exercise-trained rats. ECP levels were high as a result of high levels of ATP and decreased levels of ADP and AMP in hyperthyroid rats after the recovery period. In conclusion, short-term hyperthyroidism accelerates PA utilization in well-trained soleus muscle.
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Affiliation(s)
- M. Górecka
- Department of Applied Physiology, Mossakowski Medical Research Centre, Polish Academy of Sciences, 5 Pawińskiego Street, 02-106 Warsaw, Poland
- Department of Applied Physiology, Mossakowski Medical Research Centre, Polish Academy of Sciences, 5 Pawińskiego Street, 02-106 Warsaw, Poland
| | - M. Synak
- Department of Applied Physiology, Mossakowski Medical Research Centre, Polish Academy of Sciences, 5 Pawińskiego Street, 02-106 Warsaw, Poland
- Department of Applied Physiology, Mossakowski Medical Research Centre, Polish Academy of Sciences, 5 Pawińskiego Street, 02-106 Warsaw, Poland
| | - Z. Brzezińska
- Department of Applied Physiology, Mossakowski Medical Research Centre, Polish Academy of Sciences, 5 Pawińskiego Street, 02-106 Warsaw, Poland
- Department of Applied Physiology, Mossakowski Medical Research Centre, Polish Academy of Sciences, 5 Pawińskiego Street, 02-106 Warsaw, Poland
| | - J. Dąbrowski
- Department of Applied Physiology, Mossakowski Medical Research Centre, Polish Academy of Sciences, 5 Pawińskiego Street, 02-106 Warsaw, Poland
- Department of Applied Physiology, Mossakowski Medical Research Centre, Polish Academy of Sciences, 5 Pawińskiego Street, 02-106 Warsaw, Poland
| | - E. Żernicka
- Department of Applied Physiology, Mossakowski Medical Research Centre, Polish Academy of Sciences, 5 Pawińskiego Street, 02-106 Warsaw, Poland
- Department of Applied Physiology, Mossakowski Medical Research Centre, Polish Academy of Sciences, 5 Pawińskiego Street, 02-106 Warsaw, Poland
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Gawroński P, Górecka M, Bederska M, Rusaczonek A, Ślesak I, Kruk J, Karpiński S. Isochorismate synthase 1 is required for thylakoid organization, optimal plastoquinone redox status, and state transitions in Arabidopsis thaliana. J Exp Bot 2013; 64:3669-79. [PMID: 23956412 PMCID: PMC3745728 DOI: 10.1093/jxb/ert203] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
Isochorismate synthase 1 (ICS1) is a crucial enzyme in the salicylic acid (SA) synthesis pathway, and thus it is important for immune defences. The ics1 mutant is used in experiments on plant-pathogen interactions, and ICS1 is required for the appropriate hypersensitive disease defence response. However, ICS1 also takes part in the synthesis of phylloquinone, which is incorporated into photosystem I and is an important component of photosynthetic electron transport in plants. Therefore, photosynthetic and molecular analysis of the ics1 mutant in comparison with wild-type and SA-degrading transgenic NahG Arabidopsis thaliana plants was performed. Photosynthetic parameters in the ics1 mutant, when compared with the wild type, were changed in a manner observed previously for state transition-impaired plants (STN7 kinase recessive mutant, stn7). In contrast to stn7, deregulation of the redox status of the plastoquinone pool (measured as 1-q p) in ics1 showed significant variation depending on the leaf age. SA-degrading transgenic NahG plants targeted to the cytoplasm or chloroplasts displayed normal (wild-type-like) state transition. However, ics1 plants treated with a phylloquinone precursor displayed symptoms of phenotypic reversion towards the wild type. ics1 also showed altered thylakoid structure with an increased number of stacked thylakoids per granum which indicates the role of ICS1 in regulation of state transition. The results presented here suggest the role of ICS1 in integration of the chloroplast ultrastructure, the redox status of the plastoquinone pool, and organization of the photosystems, which all are important for optimal immune defence and light acclimatory responses.
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Affiliation(s)
- Piotr Gawroński
- Department of Plant Genetics, Breeding and Biotechnology, Faculty of Horticulture, Biotechnology and Landscape Architecture, Warsaw University of Life Sciences-SGGW, Nowoursynowska 159, Warsaw, 02-776Poland
- * These authors contributed equally to this work
| | - Magdalena Górecka
- Department of Plant Genetics, Breeding and Biotechnology, Faculty of Horticulture, Biotechnology and Landscape Architecture, Warsaw University of Life Sciences-SGGW, Nowoursynowska 159, Warsaw, 02-776Poland
- * These authors contributed equally to this work
| | - Magdalena Bederska
- Department of Botany, Faculty of Agriculture and Biology, Warsaw University of Life Sciences-SGGW, Nowoursynowska 159, Warsaw, 02-776Poland
| | - Anna Rusaczonek
- Department of Plant Genetics, Breeding and Biotechnology, Faculty of Horticulture, Biotechnology and Landscape Architecture, Warsaw University of Life Sciences-SGGW, Nowoursynowska 159, Warsaw, 02-776Poland
| | - Ireneusz Ślesak
- Department of Plant Genetics, Breeding and Biotechnology, Faculty of Horticulture, Biotechnology and Landscape Architecture, Warsaw University of Life Sciences-SGGW, Nowoursynowska 159, Warsaw, 02-776Poland
- Institute of Plant Physiology, Polish Academy of Sciences, Niezapominajek 21, Kraków, 30-239Poland
| | - Jerzy Kruk
- Department of Plant Biochemistry and Physiology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30-387 Kraków, Poland
| | - Stanisław Karpiński
- Department of Plant Genetics, Breeding and Biotechnology, Faculty of Horticulture, Biotechnology and Landscape Architecture, Warsaw University of Life Sciences-SGGW, Nowoursynowska 159, Warsaw, 02-776Poland
- To whom correspondence should be addressed. E-mail:
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Synak M, Zarzeczny R, Górecka M, Langfort J, Kaciuba-Uściłko H, Żernicka E. Fasting increases palmitic acid incorporation into rat hind-limb intramuscular acylglycerols while short-term cold exposure has no effect. ACTA ACUST UNITED AC 2011; 98:359-66. [DOI: 10.1556/aphysiol.98.2011.3.13] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Tomczyk-Żak K, Kaczanowski S, Górecka M, Zielenkiewicz U. Novel application of the MSSCP method in biodiversity studies. J Basic Microbiol 2011; 52:104-9. [PMID: 21656791 PMCID: PMC3491716 DOI: 10.1002/jobm.201000117] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2010] [Accepted: 02/22/2011] [Indexed: 11/09/2022]
Abstract
Analysis of 16S rRNA sequence diversity is widely performed for characterizing the biodiversity of microbial samples. The number of determined sequences has a considerable impact on complete results. Although the cost of mass sequencing is decreasing, it is often still too high for individual projects. We applied the multi-temperature single-strand conformational polymorphism (MSSCP) method to decrease the number of analysed sequences. This was a novel application of this method. As a control, the same sample was analysed using random sequencing. In this paper, we adapted the MSSCP technique for screening of unique sequences of the 16S rRNA gene library and bacterial strains isolated from biofilms growing on the walls of an ancient gold mine in Poland and determined whether the results obtained by both methods differed and whether random sequencing could be replaced by MSSCP. Although it was biased towards the detection of rare sequences in the samples, the qualitative results of MSSCP were not different than those of random sequencing. Unambiguous discrimination of unique clones and strains creates an opportunity to effectively estimate the biodiversity of natural communities, especially in populations which are numerous but species poor.
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Affiliation(s)
- Karolina Tomczyk-Żak
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Warsaw, Poland
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17
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Szechyńska-Hebda M, Kruk J, Górecka M, Karpińska B, Karpiński S. Evidence for light wavelength-specific photoelectrophysiological signaling and memory of excess light episodes in Arabidopsis. Plant Cell 2010; 22:2201-18. [PMID: 20639446 PMCID: PMC2929097 DOI: 10.1105/tpc.109.069302] [Citation(s) in RCA: 134] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2009] [Revised: 06/08/2010] [Accepted: 06/28/2010] [Indexed: 05/18/2023]
Abstract
Although light is essential for photosynthesis, excess light can damage the photosynthetic apparatus and deregulate other cellular processes. Thus, protective integrated regulatory responses that can dissipate excess of absorbed light energy and simultaneously optimize photosynthesis and other cellular processes under variable light conditions can prove highly adaptive. Here, we show that the local and systemic responses to an excess light episode are associated with photoelectrophysiological signaling (PEPS) as well as with changes in nonphotochemical quenching and reactive oxygen species levels. During an excess light incident, PEPS is induced by quantum redox changes in photosystem II and in its proximity and/or by changes in glutathione metabolism in chloroplasts. PEPS is transduced, at least in part, by bundle sheath cells and is light wavelength specific. PEPS systemic propagation speed and action potential are dependent on ASCORBATE PEROXIDASE2 function. Excess light episodes are physiologically memorized in leaves, and the cellular light memory effect is specific for an excess of blue (450 nm) and red (650 nm) light of similar energy. It is concluded that plants possess a complex and dynamic light training and memory system that involves quantum redox, reactive oxygen species, hormonal, and PEPS signaling and is used to optimize light acclimation and immune defenses.
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Affiliation(s)
- Magdalena Szechyńska-Hebda
- Department of Genetics, Breeding, and Plant Biotechnology, Faculty of Horticulture and Landscape Architecture, Warsaw University of Life Sciences, 02-776 Warszawa, Poland
- Institute of Plant Physiology Polish Academy of Sciences, 30-239 Krakow, Poland
| | - Jerzy Kruk
- Department of Plant Physiology and Biochemistry, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, PL-30-387 Krakow, Poland
| | - Magdalena Górecka
- Department of Genetics, Breeding, and Plant Biotechnology, Faculty of Horticulture and Landscape Architecture, Warsaw University of Life Sciences, 02-776 Warszawa, Poland
| | - Barbara Karpińska
- Department of Genetics, Breeding, and Plant Biotechnology, Faculty of Horticulture and Landscape Architecture, Warsaw University of Life Sciences, 02-776 Warszawa, Poland
| | - Stanisław Karpiński
- Department of Genetics, Breeding, and Plant Biotechnology, Faculty of Horticulture and Landscape Architecture, Warsaw University of Life Sciences, 02-776 Warszawa, Poland
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Synak M, Górecka M, Langfort J, Smol E, Zernicka E. Palmitic acid incorporation into intramuscular acylglycerols depends on both total and unbound to albumin palmitic acid concentration. Biochem Cell Biol 2003; 81:35-41. [PMID: 12683634 DOI: 10.1139/o03-008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Palmitic acid incorporation into the intramuscular acylglycerols in rat skeletal muscles of different fiber types was investigated at various total and unbound to albumin concentrations by means of the hind-limb perfusion technique. It was found that at simultaneously increasing total and unbound to albumin palmitic acid concentrations in the perfusion medium the incorporation of palmitic acid into acylglycerols increased. However, when the concentration of palmitic acid not bound to albumin was kept constant and the total palmitic acid concentration was increased, the incorporation also increased although markedly less than under former conditions. The increase was most apparent in the muscles composed of slow-twitch oxidative and fast-twitch oxidative-glycolytic fibers where fatty acid uptake is the greatest. These findings suggest that fatty acid incorporation into intramuscular acylglycerols depends not only on the unbound to albumin fatty acid concentration but also, to some extent, on the total fatty acid concentration.
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Affiliation(s)
- M Synak
- Department of Applied Physiology, Medical Research Center, Polish Academy of Sciences, PL 02-106 Warsaw, 5 Pawiñskiego str., Poland
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Górecka M, Synak M, Budohoski L, Langfort J, Moskalewski S, Zernicka E. Palmitic acid uptake by the rat soleus muscle in vitro. Biochem Cell Biol 2002; 79:419-24. [PMID: 11527211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/21/2023] Open
Abstract
Abstract: The rate of fatty acid uptake, oxidation, and deposition in skeletal muscles in relation to total and unbound to albumin fatty acids concentration in the medium were investigated in the incubated rat soleus muscle. An immunohistochemical technique was applied to demonstrate whether the albumin-bound fatty acid complex from the medium penetrates well within all areas of the muscle strips. It was found that the percentage of incorporation of palmitic acid into intramuscular lipids was fairly constant, independently of the fatty acid concentration in the medium, and amounted to 63-72% for triacylglycerols, 7-12% for diacylglycerols-monoacylglycerols, and 19-26% for phospholipids. Both palmitic acid incorporation into the muscle triacylglycerol stores and its oxidation to CO2 closely correlated with an increase in both total and unbound to albumin fatty acid concentrations in the incubation medium. Under conditions of increased total but constant unbound to albumin palmitic acid concentrations, the incorporation of palmitic acid into triacylglycerols and its oxidation to CO2 were also increased, but to a lower extent. This supports the hypothesis that the cellular fatty acid metabolism depends not only on the availability of fatty acids unbound to albumin, but also on the availability of fatty acids complexed to albumin.
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Affiliation(s)
- M Górecka
- Department of Applied Physiology, Medical Research Centre, Polish Academy of Sciences, Warsaw
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Zernicka E, Smol E, Langfort J, Górecka M. Time course of changes in lipoprotein lipase activity in rat skeletal muscles during denervation-reinnervation. J Appl Physiol (1985) 2002; 92:535-40. [PMID: 11796661 DOI: 10.1152/japplphysiol.00820.2001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The effects of denervation-reinnervation after sciatic nerve crush on the activity of extracellular and intracellular lipoprotein lipase (LPL) were examined in the soleus and red portion of gastrocnemius muscles. The activity of both LPL fractions was decreased in the two muscles within 24 h after the nerve crush and remained reduced for up to 2 wk. During the reinnervation period, LPL activity was still reduced in the soleus and started to increase only on the 40th day. In the red gastrocnemius, LPL activity increased progressively with reinnervation, exceeding control values on the 30th day post-crush. The LPL activity in the soleus from the contralateral to denervated hindlimb was also affected, being increased on the postoperation day and then gradually decreased during the following days. In conclusion, the time course of changes in muscle LPL activity after nerve crush confirmed the predominant role of nerve conduction in controlling muscle potential to take up free fatty acids derived from the plasma triacylglycerols. However, other factors, such as muscle fiber composition and the fiber transformation, should also be considered in this aspect of the denervation-reinnervation process. Moreover, it was found that denervation of muscles from one hindlimb may influence LPL activity in muscles from the contralateral leg.
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Affiliation(s)
- E Zernicka
- Department of Applied Physiology, Medical Research Center, 02-106 Warsaw, Poland.
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Górecka M, Synak M, Budohoski L, Langfort J, Moskalewski S, Żernicka E. Palmitic acid uptake by the rat soleus muscle in vitro. Biochem Cell Biol 2001. [DOI: 10.1139/o01-028] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The rate of fatty acid uptake, oxidation, and deposition in skeletal muscles in relation to total and unbound to albumin fatty acids concentration in the medium were investigated in the incubated rat soleus muscle. An immunohistochemical technique was applied to demonstrate whether the albumin-bound fatty acid complex from the medium penetrates well within all areas of the muscle strips. It was found that the percentage of incorporation of palmitic acid into intramuscular lipids was fairly constant, independently of the fatty acid concentration in the medium, and amounted to 6372% for triacylglycerols, 712% for diacylglycerols-monoacylglycerols, and 1926% for phospholipids. Both palmitic acid incorporation into the muscle triacylglycerol stores and its oxidation to CO2closely correlated with an increase in both total and unbound to albumin fatty acid concentrations in the incubation medium. Under conditions of increased total but constant unbound to albumin palmitic acid concentrations, the incorporation of palmitic acid into triacylglycerols and its oxidation to CO2were also increased, but to a lower extent. This supports the hypothesis that the cellular fatty acid metabolism depends not only on the availability of fatty acids unbound to albumin, but also on the availability of fatty acids complexed to albumin.Key words: skeletal muscle, fatty acids, triacylglycerols, phospholipids.
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Górecka M. [A case of isolated tuberculosis of the liver]. Wiad Lek 1970; 23:1429-31. [PMID: 5457428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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Górecka M, Berek-Pyzikowa B. [Alkaline phosphatase in segmented neutrophilic granulocytes in children with bronchial asthma]. Pediatr Pol 1969; 44:1393-8. [PMID: 5358371] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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Derulska D, Górecka M. [Studies on the glycogen content of erythroblasts in children with iron deficiency anemia]. Pediatr Pol 1969; 44:317-22. [PMID: 5784458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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Balukiewicz I, Górecka M, Rowecka-Trzebicka K. [Alkaline phosphatase activity in granular polynuclear neutrophils in children with rheumatic fever]. Pediatr Pol 1965; 40:1201-5. [PMID: 5861748] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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